GRASS GIS 8 Programmer's Manual
8.5.0dev(2024)-3a95b7a4e6
cairodriver/erase.c
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/*!
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\file lib/cairodriver/erase.c
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\brief GRASS cairo display driver - erase screen
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(C) 2007-2008 by Lars Ahlzen and the GRASS Development Team
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This program is free software under the GNU General Public License
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(>=v2). Read the file COPYING that comes with GRASS for details.
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\author Lars Ahlzen <lars ahlzen.com> (original contributor)
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\author Glynn Clements
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*/
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#include "
cairodriver.h
"
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/*!
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\brief Erase screen
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*/
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void
Cairo_Erase
(
void
)
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{
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G_debug
(1,
"Cairo_Erase"
);
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cairo_save(
cairo
);
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cairo_set_source_rgba(
cairo
,
ca
.
bgcolor_r
,
ca
.
bgcolor_g
,
ca
.
bgcolor_b
,
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ca
.
bgcolor_a
);
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cairo_set_operator(
cairo
, CAIRO_OPERATOR_SOURCE);
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cairo_paint(
cairo
);
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cairo_restore(
cairo
);
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ca
.
modified
= 1;
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return
;
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}
Cairo_Erase
void Cairo_Erase(void)
Erase screen.
Definition:
cairodriver/erase.c:20
cairodriver.h
GRASS cairo display driver - header file.
ca
struct cairo_state ca
Definition:
cairodriver/graph.c:42
cairo
cairo_t * cairo
Definition:
cairodriver/graph.c:46
G_debug
int G_debug(int, const char *,...) __attribute__((format(printf
cairo_state::bgcolor_r
double bgcolor_r
Definition:
cairodriver.h:70
cairo_state::bgcolor_a
double bgcolor_a
Definition:
cairodriver.h:70
cairo_state::bgcolor_g
double bgcolor_g
Definition:
cairodriver.h:70
cairo_state::modified
int modified
Definition:
cairodriver.h:71
cairo_state::bgcolor_b
double bgcolor_b
Definition:
cairodriver.h:70
lib
cairodriver
erase.c
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